These entries are queried from radb.net using whois, you can try my project getting these.
:AS31577 route: 5.35.200.0/21 descr: ProRed Comunicaciones SL origin: AS31577 mnt-by: PRORED-MNT created: 2012-06-11T16:22:47Z last-modified: 2024-01-09T12:27:00Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 31.3.120.0/21 descr: Prored Comunicaciones, S.L. origin: AS31577 mnt-by: PRORED-MNT created: 2011-04-26T10:44:37Z last-modified: 2011-04-26T10:44:37Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 83.136.184.0/21 descr: ProRed Comunicaciones origin: AS31577 mnt-by: PRORED-MNT created: 2004-07-05T18:08:35Z last-modified: 2004-07-05T18:08:35Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 83.147.63.0/24 descr: ES-DIGITALVALUE cloud origin: AS31577 mnt-by: DIGITALVALUE-MNT created: 2015-02-17T19:17:17Z last-modified: 2015-02-17T19:17:17Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 95.129.112.0/21 descr: Prored Comunicaciones origin: AS31577 mnt-by: PRORED-MNT created: 2009-04-06T13:46:29Z last-modified: 2009-04-06T13:46:29Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 185.23.120.0/22 descr: ProRed Comunicaciones origin: AS31577 mnt-by: PRORED-MNT created: 2013-04-10T16:35:07Z last-modified: 2013-04-10T16:35:07Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route6: 2a00:f640::/48 descr: ProRed Comunicaciones IPv6 Network origin: AS31577 mnt-by: PRORED-MNT created: 2013-03-05T16:02:53Z last-modified: 2013-03-05T16:02:53Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a01:88a0::/32 descr: Closeness S.L. origin: AS31577 mnt-by: PRORED-MNT created: 2014-04-22T18:10:22Z last-modified: 2014-04-22T18:10:22Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source